Fluid controlling valve



May 28, 1946. P. k. SAUNDER 4 ,4 1

FLUID CONTROLLING VALVE Original Filed Aug. l7 1938 2 Sheets-Sheetl L I //V [NT R x2232 1 i aw? 91's,

A Tram/vs Y.

P. K. SAUNDERS FLUID CONTROLLING VALVE May 28, 1946.

Original Filed Aug. 17, 1958 2 Shets-Sheet 2 F/Gifi ATTORNEY.

Patented May 28, 1946 FLUID CONTROLLING VALVE Philip Keith Saunders, Mamaroneck, N. Y.

Original application August 17,

1938, Serial No.

225,436, now Patent No. 2,290,251, dated July 21, 1942. Divided and this application March 434,939. In Great Britain 16, 1942, Serial No. August 20, 1937 7 Claims. (01. 251-55) the closure member cooperates as in the standard form of gate valve. Such a recess collects solid matter when the valve is controlling a sludge and thus eventually interferes with the proper functioning of the valve. Furthermore, when such a valve is controlling milk, beer or similar liquids, ,a small quantity of liquid is trapped in the recess and may putrefy.

A further object is to provide such a valve with a closure member of rubber or other resilient material and to construct the valve in such a way that the surface of the closure member is not rubbed on or dragged across the surface of the bore but only moved normally to it while in contact with the bore.

Astill further object is to provide an inexpensive, compact, robust and reliable valve from which satisfactory results will be obtained when controlling any kind of fluid.

With these and other objects in view the present invention consists primarily of a valve body having a substantially straight through bore with a substantially fiat or continuously aligned (in the direction of the axis of the bore) wall on I one side of the bore and a port in theother side of the bore, a resilient plug of cross section corresponding to the port and slidably mounted for movement through it, and valve operating means for moving the plug from a position retracted through the port leaving the bore' substantially unimpeded to a position compressed against the opposite side of the bore and thereby expanded to seal both bore and port.

Usually the plug is cylindrical and of greater diameter than that of the bore and is slidably mounted within a cylindrical chamber mounted transversely on the valve body so as to communicate with the bore through the port. The chamber may be either integral with the valve body or a separate member.

The resilient plug is usually made of hard rubber having a hardness comparable with that of a soft wood such as deal, but in some cases may be composite and reinforced.

Actuation of the valve may be effected manually by screw mechanism mounted in a domed cover or bonnet fitted to the top of the chamber accommodating the plug.

These and other features of the invention are hereinafter more fully described with reference to the accompanying drawings, in which Fig. 1 is an elevation half in section of a valve in accordance with the invention.

Fig. 2 is another elevation half. in section at right angles to that in Fig. 1.

Fig. 3 is a section on the line III-III of Fig. 1.

Figs. 4 and 5 are views similar to Figs. 1 and 2 of a further modification of the invention.

Fig. 6 is a section on the line VI-VI of Fig. 4.

Figs. 7 and 8 are detail views of the keyin plate used in the construction shown in Figs. 4, 5 and 6.

Referring now to Figs. 1 to 3, the valve illustrated therein has a body I and a transverse cylindrical chamber 2 cast in one piece. The bore of the body merges gradually from circular cross section at the ends 3 to a circular cross section with flat sides at the points 4 where the bore enters' a transverse cylindrical part 5 which is a continuation of the chamber 2. The wall 6 of the bore opposite the chamber is flat. Thus along the centre line of the bore this wall is continuously aligned from one end of the body to the other. Conveniently the diameter of the chamber 2 is 1 times the diameter of the ends 3 of the bore.

The bore of the transverse chamber 2 is machined and within this chamber is slidably mounted a cylindrical resilient plug 1 formed of a rubber compound having a hardness comparable with that of a soft woodsuch as deal. The plug is vulcanised to a metal cap 8 with a suitably shaped depending and. inwardly project ing flange 9 to secure it. This flange also projects outwardly at ID. A gland between the plug 1 and chamber .2 is formed by a packing ll consisting of three packing rings secured between this outwardly projecting flange l0 and an an nular washer 2| which is held in position by a castellated nut I2 screwed on to a threaded boss I3 on top of the cap 8. The nut l2 has a boss M which projects through the washer 2| so as to form a surface against which the packing I I will abut.

On top of the chamber is attached a domed casat least apart of 1 ing orbonnet I5 which carries the valve actuating gear. This bonnet I 5 has a radial split 1 6 and is clamped in position upon the chamber by means of a tangential bolt I! which draws parts of the gether.

bonnet is on the opposite sides of the split 16 to- This bolt ll also engages an external circumferential groove E5 in the chamber. The bonnet iii has an inwardly projecting flange I8 against which the top of the chamber 2 abuts. This flange projects inwards slightly beyond the inside surface of the chamber 2, and, therefore, provides a shoulder against which the washer 2! securing the packing limiting movement of direction.

The plug 1 is moved transversely across the bore by means of an externally threaded spindle is pivotally attached at 28 to the cap 8. dle i9 is engaged by an internally threaded bush 22 which is rotatably mountedcentrally in the top of the bonnet l5 and prevented from endwise movement thereto by an external collar 23 on its inner end between which and is a thrust race 2d, and a hand wheel 25 keyed to its outer end. The spindle has flats 26 on opposite sides and is prevented from rotation relatively to the bonnet it by means of a keying yoke 2? with an aperture 28 of 'similar cross section to that of the spindle l9 and having arms 29 which are secured in suitably diametrically opposite slots 3%] in the bonnet l5.

In operation the plug may be fully retracted so that its end is flush with the wall of the bore of the valve body i surrounding the port communicating with the chamber 2. In this position the washer 2i securing the packing gland II will be pressed against the limiting flange I!) on the bonnet '15, thereby tightening the gland and relieving the load on the castellated nut i2, which accordingly may be tightened by means of a suitable implement through a convenient aperture 3i provided in the side of the bonnet i5. Due to the presence of the boss E4 on the castellated nut I2 against which part of the gland abuts, there is no danger, on account of vibration set up in the pipe, of the nut 52 becoming loose when the valve is fully open. 7

To close the valve the hand wheel 25is turned, so rotating the bush 22 and moving the spindle IS in an axial direction and with it the plug 1. When the plug contacts with the fiat wall 8 of the bore opposite the chamber further movement of the actuating Wheel compresses the plug 1 axially and expands it radially, thus sealing the bore of the valve body I and at the same time expanding the part of the plug 1 within the chamber 2 into contact with its Wall and thus also sealing the port between the valve body i and chamber 2.

The modification illustrated in Figs. 4 to 8 is designed for the control or" compressed air. The valve body 59 has a transverse cylindrical chamber 68, in which is slidably mounted a resilient hard rubber cylindrical plug 6 I. In order to make the valve as compact as possible, the plug 6| is shorter relatively to the bore of the valve body 5% than in the other valves illustrated in the drawings. As a result the wall of the chamber 66 is extended at $2 a short distance into the bore of the valve. so that in the fully open position as shown the bore of the valve has the form of a venturi.

The plug 6! is vulcanised to a cap l5 which is integral with the screwed boss 53 and a threaded spindle 64. A gland between the plug 6! and the chamber 69 is provided by a double cupleather 55 having the form of an annulus of T section radially. This cup leather is secured by a retain ing ring 8% screwed on to the boss 33. The spinthe plug 1 in the opening gland H will abut, thus' This spinthe bonnet l5 there dle 64 has flat sides 61 and is prevented from rosection corresponding to that of the spindle 64 and formed by bending down the surrounding edge of a smaller aperture in the metal blank from which the plate is made. An annular fibre washer in and this plate 68, Whose turned down edge forms a protection for the edge of the central aperture of the washer 10, are placed upon the open end of the chamber 69 with the spindle {14 passing throughthem. An internally screwed cover or bonnet "H screwed on to the end of the chamber clamps the washer 'ill and plate 63 against the end of the chamber 60.

' An internallythreaded bush 19 for co-operation with the spindle 64 is rotatably mounted in the 'top of the bonnet Hand is endwise located by means of a collar 89 on it bearing against the inside of the bonnet H and a hand wheel 8 l keyed to the projecting end of the bush.

When the valve is in the fully open position as shown in Fig. 4, the ring GE is pressed against Q g the fibre washer IE! so preventingany possibility of leakage past th gland when the valve is in this position.

What I claim is:

1. Valve actuating mechanism for moving a cylindrical valve closure member transversely across the bore of a valve body, comprising a bonnet, a threaded spindle of non circular cross section centrally mounted on said closure member, an internally threaded bush co-operating with said spindle axially located but freely rotatably mounted centrally in and projecting through said bonnet, and a keying yoke having a hole of similar cross section to that of the spindle and located with its ends secured at diametrically 0pposite points in said bonnet with the spindle passing through said hole.

2. Valve actuating mechanism for moving a cylindrical valve closure member transversely across the bore of a valve body, comprising a bonnet having' diametrically opposite apertures adjacent its periphery, a threaded spindle. of noncircular cross section centrally mounted on said closure member, an internally threaded bush cooperating with said spindle axially located but freely rotatably mounted centrally in and projecting through said bonnet, and a keying yoke having a hole of similar cross section to that of the spindle and located with its ends respectively within said apertures and the spindle passing through said hole.

3. Valve actuating mechanism for. moving a cylindrical valve closure member transversely across the bore of a valve body, comprising a bonnet, a threaded spindle of non-circular cross section pivotally mounted on said closure. member about an axisperpendiculanto the axis of the spindle, an internally threaded bush cc-opcrating with said spindle axially'located but freely rotatably mounted centrally in and projecting through said bonnet, and a keyingyoke having a hole of similar cross section to that of the spindle and located with its ends secured at diametricallyopposite points in said bonnet with the spindle passing through said hole.

4. Valve actuating mechanism for moving a cylindrical valve closure member transversely across the bore of a valve body, comprising a bonnet having diametrically oppositeapertures adjacent to its periphery, a threaded spindle of non-circular cross section pivotally mounted on said closure member about an axis perpendicular to the axis of the spindle, an internally threaded bush co-operating with said spindle axially located but freely rotatably mounted centrally in and projecting through said bonnet, and a keying yoke having a hole of similar cross section to that of the spindle and located with its ends respectively within said aperture and the spindle passing through said hole.

'5. A fluid controlling valve, comprising a valve body with a substantially straight through bore and a transverse cylindrical chamber with its axis perpendicular to the axis of the bore, a resilient plug slidably mounted within said chamber, a metal cap mounted on said plug and having a projecting screwed boss and beyond it a threaded spindle of non-circular cross section smaller than that of the boss, an annular packing of T section radially, a nut screwed on said boss and retaining said packing, an annular fibre washer of greater external diameter than said chamber, a keying plate with a central non circular aperture similar to the cross section of the spindle with the periphery of the aperture bent down, a bonnet mounted on the open end of said chamber and retaining said washer and said keying plate against the end of said chamber, and valve actuating means mounted in said bonnet for moving said plug from a position within the chamber to a position compressed against the 9 opposite side of said bore.

6. Valve actuating mechanism for moving a cylindrical valve closure member transversely across the bore of a valve body, comprising a bonnet, a threaded spindle centrally mounted on said closure member, an internally threaded bush co-operating with said spindle axially located but freely rotatably mounted centrally in and pro jecting through said bonnet, and a keying yoke having a hole of similar cross section to that of the spindle and located with its ends secured at diametrically opposite points in said bonnet with the spindle passing through said hole, said keying yoke acting on said spindle to keep said spindle and plug from rotating.

7. A fluid controlling valve, comprising a valve body with a substantially straight through bore, a transverse cylindrical chamber with its axis perpendicular to the axis of the bore, a resilient plug slidably mounted within said chamber, a bonnet, a threaded spindle of non-circular cross section centrally mounted on said plug, a keying yoke having an aperture similar to the cross section of the spindle, and keying said spindle to keep it from rotating, and an internally threaded bush co-operating with said spindle axially located but freely rotatably mounted in and projecting through said bonnet.

PHILIP KElTH SAUNDERS. 

